The dynamical RLL conjecture for elliptic L-operators

Let $U_{q,p}([...??]$ be the elliptic quantum algebra with half currents assembled into the $L$-operator $[...??]$. For two auxiliary tensor components, write $[...??]$ and let $R^+(z_1/z_2,[...??])$ and $R^{+*}(z_1/z_2,[...??])$ denote the corresponding dynamical $R$-matrices. Dynamical RLL conjecture. The $L$-operator satisfies

$$R^{+(12)}(z_1/z_2,[...??])[...??][...??]=[...??][...??]R^{+*(12)}(z_1/z_2,[...??]).$$

This conjecture proposes the exchange relation governing the elliptic $L$-operator and is intended to provide its dynamical $RLL$ presentation. The supplied text does not state whether the relation has been proved or remains open.